Scaffold for window-washing or the like.



' I PATENTED MAR. 31, 1903..

- J. 0. GROW.

SOAFFOLD FOR WINDOW WASHING OR THE LIKE. API LIOATION FILED MAE. 6,1902.

II" a L mi 71 //////I JOHN C. CROIV, OF LOS SCAFFOLD FOR WINDOW PATEivTOFFICE.

ANGELES, CALIFORNIA.

-WASHING OR THE LIKE.

SPECIFICATION forming part of Letters Patent No. 724,406, dated March31, 1903.

Application filed March 6, 1902.

To all whom it may concern.-

Be it known that I, JOHN CHANNING Grow, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Improvementin Scaifolds forVindow- I/Vashing or the Like, of which the following is aspecification.

An object of this invention is to provide a portable scaffold which canbe readily applied inwindows for the support of persons desiring to washwindows or to perform any other work outside the wall.

The invention is applicable to form a support on the outside of any wallhaving window-openings.

This invention relates to the construction of the bracket, which may beapplied in any window-opening and which may be preferably adjustable tofit walls of diiferent thicknesses.

It also relates to other features hereinafter set forth.

The accompanying drawings illustrate this invention.

Figure I is a plan view of a scaffold embodying this invention. Fig. IIis an elevation of the invention applied in the window. A fragment ofthe wall is shown. Fig. III is an elevation of the invention as appliedin the window. Aportion of the supporting-bar is broken away to contractthe .view. Fig. IV is a fragmental detail of a portion of the" bracketshown in Fig. III. Fig. Vis a crosssection on line V V, Fig. IV. Fig. VIis a fragmental sectional detail showing a form of means for adjustablyfastening the floor member or platform to the bracket. Fig. VII is asectional detail of the adjustable guard-rail shown in Fig. II.

The inventionincludes a scaffold-bracket comprising a bar adapted torest on the windoW-sill or a like support and furnished with two armsadapted to engage opposite sides of the wall below the sill.

Two or more brackets may be employed. The same may be suitably connectedtogether and may be adjustably connected together to form the scaffoldscorresponding to the dilferent widths of windows. In some instances itmay be desirable to apply the brackets in separate windows and toprovide con- Serial No. 96,989. (No model-I nections of considerablelength between the brackets.

In Fig. II the invention isshown applied in a narrow window, with ashort board in place to form the platform. It is to be understood thatfor longer scaffolds longer boards will be used. l dosignates a baradapted to rest on a window-sill 2 and furnished with two arms 3 4,adapted to engage opposite sides of the wall 5 below the sill.

As shown in Fig. III, the wall-engaging portions 6 7 of the arms may beat different distances from the bar 1, so that the bar, may be canted inone direction-namely, upwardly inward toward the window for the purposeof removing the brackets from the window. The portions 6 and 7 aredesirably furnished with cushions z, of rubber or other suitablematerial,- to hold the bodies of said arms from contact with the'walland to avoid marring the wall.

In some instances the space between the wall engaging portions 6 '7 maybe great enough to allow the bracket when canted for the purpose to bepassed down over the window-sill, thus to bring the bracket into and outof position without changing the relative position of the arms 3 4.

Preferably provision is made for adjusting the arms relative to eachother on the bar. For this purpose the arm lmay be provided with one ormore sleeves, as shown at 8 and 9, which may slide along upon the bar,and the bar may be furnished at one portion with teeth 10, over whichthe sleeves 8 and 9 may move. The sleeve 8 may be furnished with a tooth11 to engage said teeth 10, so that when the arm 4 is slid along the bar1 over the notched or toothed portion 10 toward the arm 3, which is atthe outer portion of said bar 1, the tooth 11 may engage the teeth 10and hold the arm 4 from sliding away from the arm 3. Preferably thesleeve 8 has an opening 12, which is considerably wider than the bar 1,so that the tooth 11 may be readily withdrawn from the bar by liftingand canting the arm 4 relative to the bar 1. The sleeve 9 is mounted ona projection 13, which is arranged to contact with the under side of thebar 1 to prevent the arm 4 from being canted away from the arm 8, sothat when the arms are brought into position on the wall, as shown inFig. III, the bar 1 will be held level.

14 designates a platform resting on the bars of the two completebrackets .51: and y.

15 designates means for detachably fastening the platform to the bars.Preferably the bars are bent up at their outer ends to rerespectivelyform standards ct for a guard-rail.

26 designates an extensible tie detachably fastened to the upper ends ofthe standards a to form'a guard-rail for the protection of the personusing the platform. This extensible tie may be of any desirableconstruction. In the drawings, b designates a sleeve fastened by awinged nut o to the standard' of one bracket, and d designates a rodtelescoping in thesleeve b and fastened therein by a setscrew e andfastened to the other standard by a Winged nut f.

16 designates a cushion under the bar 1 to rest upon the window-sill,the same being adjustably secured to the bar by any suitable means. 17designates staples which straddle the bar 1 and are fastened to thecushion and slidably attach the cushion to the bar, (see Fig. V,)thereby permitting the cushion to be moved along on the bar into aposition Where it will rest upon the proper part of the window-sill.

For the purpose of adj nstably connecting the platform 14 with thebracket-bars 1 holes 18 may be provided in the plank which forms theplatform 14, and the staples 15 may be passed through the appropriateholes to embrace the bars 1 when the same are set at the appropriatedistance apart.

In actual practice the appliance may be readily taken apart byunscrewing the nuts of and removing the platform 14 and then withdrawingthe brackets w y from the Window sill or sills. All the parts may thenbe stored in a comparatively small space.

When it is desired to use the scaffold, the brackets will be broughtinto position and fastened by the tie 26, and the platform 14 will bebrought into place, and the scaffold will then be ready for use. To takedown the form shown in the drawings, the platform 14 may be vdetachedand the brackets canted up toward the window and the bars lifted fromthe window-sill, and the arm 4 may be lifted and slid back from thewindow-sill, thus allowing the brackets to be withdrawn inward over thewindow-sill.

In Figs. II and III flanges 25 are shown fastened to the platform 14-tofit upon the bars 1 to hold the platform in place.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. A bracket comprising a horizontal bar, a downwardly extending armintegral with said bar, and an arm slidably mounted on said horizontalbar, means on said slidable arm for adjustably securing the latter tosaid horizontal bar, a projection from said slidable arm extendingupwardly and rearwardly therefrom, a sleeve thereon, the horizontal barloosely passing through said sleeve, a platform mounted on saidhorizontal bar, and a standard integral with said horizontal bar andextending perpendicularly thereof from the outer end of the horizontalbar.

2. Inascaifold, a plurality of brackets, one of said brackets comprisinga bar adapted to rest on a window-sill, and two arms connected to saidbracket and adapted to engage opposite sides of the wall below thewindow-sill, one of said brackets having a tubular extension extendinglaterally from its outer end, another of said brackets having a rodextending laterally therefrom and slidably mounted in said tubularextension, and means forfastening said rod to said tubular extension.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses, at Los Angeles, California, this 28th day ofFebruary, 1902.

J. C. CROIV.

Witnesses:

JAMES R. ToWNsEND, JULIA TOWNSEND.

